... metal plating,electrophoresis, polishing,Aluminum color Multi-functional High speed electronic engraving machine is one of used specific liquid that to engraving ... 01105380.1 etc, via of testing report from National product quality & control bureau: NPQC No.3. 200150013, as well ... the pen, the knob, the kitchenware of the bathroom, the handle, the handicraft, the aluminum box, the aluminum tube, the ...